nubus: Don't use create_proc_read_entry()

Don't use create_proc_read_entry() as that is deprecated, but rather use
proc_create_data() and seq_file instead.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-m68k@lists.linux-m68k.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 76 insertions, 5 deletions

diff --git a/drivers/nubus/proc.c b/drivers/nubus/proc.c
index bb1446bb2802..b8286ed65919 100644
--- a/drivers/nubus/proc.c
+++ b/drivers/nubus/proc.c
@@ -52,7 +52,6 @@ static int nubus_devices_proc_open(struct inode *inode, struct file *file)
 }
 
 static const struct file_operations nubus_devices_proc_fops = {
-	.owner		= THIS_MODULE,
 	.open		= nubus_devices_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -61,6 +60,10 @@ static const struct file_operations nubus_devices_proc_fops = {
 
 static struct proc_dir_entry *proc_bus_nubus_dir;
 
+static const struct file_operations nubus_proc_subdir_fops = {
+#warning Need to set some I/O handlers here
+};
+
 static void nubus_proc_subdir(struct nubus_dev* dev,
 			      struct proc_dir_entry* parent,
 			      struct nubus_dir* dir)
@@ -73,10 +76,10 @@ static void nubus_proc_subdir(struct nubus_dev* dev,
 		struct proc_dir_entry* e;
 		
 		sprintf(name, "%x", ent.type);
-#warning Need to set some I/O handlers here
-		e = create_proc_read_entry(name, S_IFREG | S_IRUGO | S_IWUSR,
-					   parent, NULL, NULL);
-		if (!e) return;
+		e = proc_create(name, S_IFREG | S_IRUGO | S_IWUSR, parent,
+				&nubus_proc_subdir_fops);
+		if (!e)
+			return;
 	}
 }
 
@@ -159,6 +162,73 @@ int nubus_proc_detach_device(struct nubus_dev *dev)
 }
 EXPORT_SYMBOL(nubus_proc_detach_device);
 
+/*
+ * /proc/nubus stuff
+ */
+static int nubus_proc_show(struct seq_file *m, void *v)
+{
+	const struct nubus_board *board = v;
+
+	/* Display header on line 1 */
+	if (v == SEQ_START_TOKEN)
+		seq_puts(m, "Nubus devices found:\n");
+	else
+		seq_printf(m, "Slot %X: %s\n", board->slot, board->name);
+	return 0;
+}
+
+static void *nubus_proc_start(struct seq_file *m, loff_t *_pos)
+{
+	struct nubus_board *board;
+	unsigned pos;
+
+	if (*_pos > LONG_MAX)
+		return NULL;
+	pos = *_pos;
+	if (pos == 0)
+		return SEQ_START_TOKEN;
+	for (board = nubus_boards; board; board = board->next)
+		if (--pos == 0)
+			break;
+	return board;
+}
+
+static void *nubus_proc_next(struct seq_file *p, void *v, loff_t *_pos)
+{
+	/* Walk the list of NuBus boards */
+	struct nubus_board *board = v;
+
+	++*_pos;
+	if (v == SEQ_START_TOKEN)
+		board = nubus_boards;
+	else if (board)
+		board = board->next;
+	return board;
+}
+
+static void nubus_proc_stop(struct seq_file *p, void *v)
+{
+}
+
+static const struct seq_operations nubus_proc_seqops = {
+	.start	= nubus_proc_start,
+	.next	= nubus_proc_next,
+	.stop	= nubus_proc_stop,
+	.show	= nubus_proc_show,
+};
+
+static int nubus_proc_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &nubus_proc_seqops);
+}
+
+static const struct file_operations nubus_proc_fops = {
+	.open		= nubus_proc_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
 void __init proc_bus_nubus_add_devices(void)
 {
 	struct nubus_dev *dev;
@@ -169,6 +239,7 @@ void __init proc_bus_nubus_add_devices(void)
 
 void __init nubus_proc_init(void)
 {
+	proc_create("nubus", 0, NULL, &nubus_proc_fops);
 	if (!MACH_IS_MAC)
 		return;
 	proc_bus_nubus_dir = proc_mkdir("bus/nubus", NULL);